Tatsuhiko Koga

Title: Innovations of Tatsuhiko Koga

Introduction

Tatsuhiko Koga is a notable inventor based in Sakado, Japan. He has made significant contributions to the field of electrical engineering, particularly in power supply technology. His innovative work has led to the development of a unique patent that enhances the efficiency of power supply devices.

Latest Patents

Tatsuhiko Koga holds a patent for a Switched-mode power supply device. This invention features an error amplifier that outputs an error voltage to the primary side as a feedback signal, indicating the state of the load. The oscillator in the device controls the switching frequency of the operation, reducing it from a highest normal frequency to a lowest normal frequency based on the feedback signal. This adjustment occurs in a load range from a heavily-loaded state to a lightly-loaded state during normal oscillating operations. Additionally, an intermittent oscillation control circuit is included, which intermittently performs the switching operation by stopping it based on the feedback signal when the load is lighter than a previously set reference. The oscillator also increases the switching frequency from an intermittent-operation frequency lower than the lowest normal frequency during the intermittent oscillation duration.

Career Highlights

Tatsuhiko Koga is currently employed at Sanken Electric Co., Ltd., where he continues to innovate in the field of power supply technology. His work has been instrumental in advancing the efficiency and reliability of electrical devices.

Collaborations

Some of his notable coworkers include Akira Hayakawa and Masaaki Shimada, who have collaborated with him on various projects within the company.

Conclusion

Tatsuhiko Koga's contributions to the field of electrical engineering, particularly through his patented Switched-mode power supply device, highlight his innovative spirit and dedication to advancing technology. His work continues to influence the industry and improve power supply systems.